1 . If 4a+4b+4c+4d=112, what is the average of a,b,c and d ?
- A. 28
- B. 4.5
- C. 4
- D. 13
- D. None of these
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1 . If 4a+4b+4c+4d=112, what is the average of a,b,c and d ?
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